The measurements done in different types of buildings, shows that the values in real terms, from on-situ casted or precasted stairs (with the gap between the landing and wall fully casted out), are between 65-70 dB(Publication from Byggforsk 2-2006 nr 532.241)

Therefore will we recommend these solutions when insulating for impact sound:

Note! All of these solutions are only casted out around the TSS/ RVK units. It is very important that the cap between the rest of the landing and the wall is not casted out. (Then you will get an lower reduction for the impact sound)